.shen{
  color: white;
  width: 100%;
  height: 90px;
  background-color: orange;
  text-align: center;
  line-height: 90px;
  font-size: 33px;
  font-weight: 900;
  img{
    margin-right: 25px;
    float: right;
    margin-top: 14px;
  }
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

ul, ol {
  list-style: none;
}

a {
  text-decoration: none;
  color: black;
}

a:hover {
  color: #333;
}

.clearfix::after,
.clearfix::before {
  content: " ";
  line-height: 0;
  height: 0;
  display: block;
  visibility: hidden;
  clear: both;
}
//底部
.na {
  width: 100%;
  left: 0;
  right: 0;
}

.na li {
  text-align: center;
  height: 50px;
  line-height: 50px;
  border: 1px solid black;
  margin-bottom: 20px;
  font-size: 14px;

}

.na li:nth-child(1) {
  width: 25%;
  float: left;
}

.na li:nth-child(2) {
  width: 25%;
  float: left;
}

.na li:nth-child(3) {
  width: 49.9%;
  float: left;
}

.gong {
  left: 0;
  right: 0;
  text-align: center;
  color: orange;
  margin-bottom: 20px;
}

.gong a, p {
  color: black;
  font-size: 13px;
}
.fl {
  float: left;
}

.fr {
  float: right;
  margin-right: 10px;
  font-size: 18px;
}
.main{
  padding: 20px;
}
.shen {
  height: 70px;
  line-height: 70px;
  background-color: orange;
  width: 100%;
}
.shen a{
  font-weight: 300;
  line-height: 80px;
  margin-left: 5%;
  color: white;
}
.shen div{
  margin-left: 5%;
  font-size: 30px;
  font-weight: 900;
  color: white;
}
.shen img{
  width: 50px;
  margin-top: 10px;
  margin-right: 5%;
}
.name{
  font-size: 30px;
  font-weight: 700;
}
.price{
  color: orangered;
  font-size: 20px;
}
.three{
  font-size: 15px;
}
.productinfo{
  font-size: 20px;
}
.productimg img{
  width: 300px;
  height: 300px;
}
.productcomment{
  font-size: 15px;
}
.tit{
  font-size: 15px;
}
.form textarea{
  width: 300px;
  height: 250px;
}
.ctrl input{
  font-size: 20px;
}
.qu{
  width: 100%;
  height: 30px;
  line-height: 30px;
  text-align: center;
  div{
    background-color: orange;
    margin: 0 auto;
    width: 70%;
    color: white;
    font-size:20px;
    border-radius: 10px;
  }
}